Coupled Biotreatment of Waste Gas Containing H2S and VOCs in a Compound Biofilter

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Sha, Haolei^1 ; Cai, Luxiang^2 ; Xie, Guojian^3

College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo

315100, China^1

Ningbo Dahongying University, Ningbo

315175, China^2

Nanyang Street Agency of Xiaoshan District People's Government in Hangzhou City, Hangzhou

311227, China^3

关键词: Biotreatments;    Biotrickling filters;    Empty bed residence time;    H2S removal;    High-efficiency;    Material consumption;    Upper layer;    VOCs removal;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012121/pdf
DOI  :  10.1088/1757-899X/301/1/012121

来源: IOP

【 摘 要 】

A pilot-scale compound biofilter was installed in a pharmaceutical factory to purify waste gas containing H2S and VOCs. The results confirmed that compound biofilter had the both advantages of biotrickling filter (BTF) and biofilter (BF), with high efficiency, energy conservation and low material-consumption in dealing with mixture waste gas containing H2S and VOCs. Under the conditions of empty bed residence time(EBRT) at 18 s, temperature 30 °C, pH 2∼4, average H2S removal efficiency reached above 97%, with removal load of 71.2 g/m3•h, which was mainly degraded by BTF, the lower layer of compound biofilter. Meanwhile, average VOCs removal efficiency reached above 80%, with removal load of 94.3 g/m3•h, which was mainly degraded by BF, the upper layer of the system. Thus it was found that EBRT had a more obvious effect on VOCs removal efficiency than that on H2S.